동식물위생연구 국제공인연구실 WOAH reference lab 브루셀라병연구실
동식물위생연구에 대한 모든 정보가 있습니다.
WOAH 77차 총회에서 아·태 지역 최초로 브루셀라병 표준실험실로 인정받음(2009년 5월)
이진주 수의연구사
[농림축산검역본부]
실험실-세균질병과
[농림축산검역본부]
Application and evaluation of the MLVA typing assay for the Brucella abortus strains isolated in Korea(2012-01-10) | |||||
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담당부서 | Animal and Plant Health Research | 작성자 | Moon Her | 0 | 2012-01-10 |
Moon Her*, Sung-Il Kang, Dong-Hee Cho, Yun-Sang Cho, In-Yeong Hwang, Young-Ran Heo, Suk-Chan Jung, and Han-Sang Yoo. 2009. Application and evaluation of the MLVA typing assay for the Brucella abortus strains isolated in Korea. BMC Microbiology 9:230. Abstract BACKGROUND:A Brucella eradication program has been executed in Korea. To effectively prevent and control brucellosis, a molecular method for genetic identification and epidemiological trace-back must be established. As part of that, the MLVA typing assay was evaluated and applied to B. abortus isolates for analyzing the characteristics of the regional distribution and relationships of foreign isolates. RESULTS:A total of 177 isolates originating from 105 cattle farms for the period 1996 to 2008 were selected as representatives for the nine provinces of South Korea. A dendrogram of strain relatedness was constructed in accordance with the number of tandem repeat units for 17 loci so that it was possible to trace back in the restricted areas. Even in a farm contaminated by one source, however, the Brucella isolates showed an increase or decrease in one TRs copy number at some loci with high DI values. Moreover, those 17 loci was confirmed in stability via in-vitro and in-vivo passage, and found to be sufficiently stable markers that can readily identify the inoculated strain even if minor changes were detected. In the parsimony analysis with foreign Brucella isolates, domestic isolates were clustered distinctively, and located near the Central and Southern American isolates. CONCLUSION:The MLVA assay has enough discrimination power in the Brucella species level and can be utilized as a tool for the epidemiological trace-back of the B. abortus isolates. But it is important to consider that Brucella isolates may be capable of undergoing minor changes at some loci in the course of infection or in accordance with the changes of the host.
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